Does anybody know why Konjuh and Bencic don't play together in doubles at US Open?

Konjuh/Lekaj are #7 seeded at US Open. They play today their 1st round of doubles against Flink/Sherif last match (5 th) on court 10.

Bencic and Uberalova are better friends than Bencic and Oluja
Bel and Oluja only played at Wimbly and IIRC aren't that close
IMO, playing with Adrijana isn't a bad idea because she is Croatian and she obiously has potential which IMO Bel doesn't have

First off, Fanning isn't a bad player. She fought hard, came into net a lot and really tried to make a match of it. Unfortunately for her, Ana's game was just too good. Great first serve, decent second serve (although it needs work), strong groundstrokes (great backhand) and a great ability to turn defense into offense. I really liked Ana's attitude. The second set could have easily been 6-3, but Ana refused to let the other girl win the big points.

Ana was the best of all the junior players I saw today (uberlova is extremely overhyped).

First off, Fanning isn't a bad player. She fought hard, came into net a lot and really tried to make a match of it. Unfortunately for her, Ana's game was just too good. Great first serve, decent second serve (although it needs work), strong groundstrokes (great backhand) and a great ability to turn defense into offense. I really liked Ana's attitude. The second set could have easily been 6-3, but Ana refused to let the other girl win the big points.

Ana was the best of all the junior players I saw today (uberlova is extremely overhyped).